Circuit controller



June 22 1926. 1,589,765

E. SCHEEMACKER ET AL CIRCUIT CONTROLLER Filed August 14, 1923 -5. a .E711% srzwmcl-or I a L t I/ "w Patented June 22, 1926. I I I U NIT E D ST A T E S ATEN T OF F I C E EMILE .SCHEEHAJCKER AND GEORGES RAIMOND'OFVs'OON-SOCKET, :RHODE ISLAND.

CIRCUIT CONTROLLER.

Application filed August 14, 1923. Serial No. 657,383.

The present invention relates to circuit outer end of the spring 10. Thepost may be 55 V controllers of the thermostatic type and provided witha clamping nut 24, but as adapted to be placed in rooms or other locatheinstrument in many cases is placed at tions where dangerous heat orcombustion the top of the room, said post has connected 5 may takeplace, and which will sound an thereto a downwardly extending link alarmunder such circumstances. that is connected to another post 26 slidableno The object is to provide a very simple arin a vertical slot 27 formedin the face plate ticle of manufacture that will close a cirof athermometer 28. This thermometer is cuit so as to sound an alarm orotherwise provided with the usual gage scale 29 and 1 operate a signalwhen dangerous heat conthe post 26 carries a. pointer movable ditionsarise. along said scale. The post 26 also has a The preferred embodimentof the invenclamping nut 31. tion is illustrated in the accompanyingWith this construction it will be obvious drawings, wherein that thetension of the spring 10 can be 15 Figure 1 is a side elevation of theappavaried as desired by moving the post 26 up ratus, or down, thismoving the link 25, moves the Figure 2 is a View in elevation with thepost 22, and thereby increases or decreases front plate of the casingremoved, the tension of the spring 10. Assuming the Figures 3, 4 and 5are detail sectional parts as shown in Figure 2, normally the 20 viewsrespectively on the lines 3-3, 41 terminal 17 of the lever 16 is out ofconand 5-5 of Figure 2, tact with the mercury 14 in the cup 13. If,Figures 6 and 7 are respectively sectional however, an unusual ordangerous degree views on the lines 6-6 and 7-7 of Figure 1. oftemperature occurs, the spring 10 will In the embodiment disclosed, asuitable automatically operate to turn the shaft 11, 25 casing isemployed, comprising spaced front thereby turning the crank 18 andcausing and rear plates 8 and 9, forming an open its forked end 19 toengage the lever 16 and housing. Within this casing is located a swingit until the terminal 17 is in the merthermostatic element 10 in theform of a cury. If, now, the cup 13 and the casing is coiled spring, theinner end of which is placed in an electric circuit containing anmounted on a shaft 11 j ournaled in the front alarm, it will be obviousthat the circuit and rear plates 8 and 9. Mounted on the will be closedand the alarm actuated. The rear plate is a block 12 of insulatingmaterelation of the parts is such that by moving rial, supporting acontact element 13, the the pointer 30 to the different degreesindiupper end of which is in the form of a cup cated on the thermometerthe alarm will be that contains mercury 14. sounded when that degree oftemperature is A post 15, supported on the block 12, but approximatelyreached. grounded on the casing, constitutes a mount- From theforegoing, it is thought that the ing for a lever 16 that is fulcrumedbetween construction, operation and many advanits ends on said post. Oneend of this lever tages of the herein described invention will has adownturned terminal 17 that is be apparent to those skilled in the artwithadapted to move into and out of the merout further description andit will be uncury 1 1 of the cup. The other end extends derstood thatvarious changes in the size, toward the coiled spring 10. The shaft 11shape, proportion and minor details of conon which said spring ismounted carries a struction may be resorted to without decrank arm 18,the terminal of which is parting from the spirit or sacrificing anyforked as shown at 19, this forked end being of the advantages of theinvention. adapted to operate against the arm of the Having thus fullydescribed our invenlever 16 opposite to that carrying the tertion, whatwe claim as new, and desire to minal 17. Preferably also the shaft isprosecure by Letters Patent, is vided with a counterweight arm 20. Acircuit controller comprising a housing,

The outer plate 8 of the casing is provided a mercury cup terminalmounted in the with an arcuate slot 21, in which is slidably housing, ashaft journaled in the housing mounted a post 22, and the inner end ofthis at one side of the cup. a lever fulcrumed post is received by aneye 23 formed on the between its ends in the housing between the cup andshaft, one arm of the lever having the shaft and fixed thereto forturning the a portion that enters the cup, the other arm shaft and arm.

extending towards the shaft, a counter- In testimony whereof, We affixour signa- 10 Weighted arm fixed to the shaft and having tures.

a terminal yoke that receives and engages the other and adjacent arm ofthe lever, and

a heat responsive coiled spring surrounding EMILE SCHEEMACKER. GEORGESRAIMOND.

